Announcing Rust 1.3

Sep 17, 2015 • The Rust Core Team

The gear keeps turning: we’re releasing Rust 1.3 stable today! As always, read
on for the highlights and check the release notes for more detail.

What’s in 1.3 stable

This is our first release shipping with the
Rustonomicon, a new book covering
“The Dark Arts of Advanced and Unsafe Rust Programming”. While it’s still in
draft form, this book already provides deep coverage of some of Rust’s darker
corners.

On the library front, we saw a fair amount of API stabilization, including the
new Duration API and enhancements to Error and Hash/Hasher. We expect to
see further growth of the std::time module in the 1.5 timeframe.

The 1.3 cycle also saw continuing focus on performance. Most wins here are
within the standard library:

We’re continuing to invest in Windows, with
preliminary support for targeting Windows XP. While
we do not intend to treat Windows XP as a “first tier” platform, it is now
feasible to build Rust code for XP as long as you avoid certain parts of the
standard library. Work on MSVC toolchain integration is ongoing, with full
support (on 64-bit) shipping in the 1.4 beta today.

On the Cargo front, we have landed support for
lint capping as specified by an
earlier RFC. The idea is that
lints in your dependencies should not affect your ability to compile cleanly,
which in turn makes it easier to tweak the way lints work without undue hassle
in the ecosystem.

Contributors to 1.3

Rust is a community-driven language, and we’re delighted to thank the 131
contributors to this release: